Grain-breaker and gr



(No Model.) 2V Sheets-Sheen 1.

` 8 J. M. SPBBR,'Jr.

GRAIN BREAKER AND GRINDING MILL.

No. 291,884. l 'Patented .13.188, 1884.

` 5:- r'. 5f' v5 T -2.. f im u i. z

I'VITJV'ESSES (No Model.) H y 2 sheets-sheen 2.

J, M. SPEBR, Jr.v

- GRAIVNYBREAKBR AND GRINDING MILL.

No. 291.684,. A Patented Jan. 8, 1884.

les:

tgz:

" UNITED Srarns Barmer @ricrea JOHN M. sPEEs, Jn., or roeren-ANCH, INDIANA.

GRAIN-BREAKER AND Gambino-wirr.

SPECIFICATION forming partof Letters Patent No. 291,634-, dated January 8, 1.884.

l l Application filed October 6, 1883. (No model.)

To all whom it rmay concern:

Beit known that l, JOHN M. SPEER, .l r., a citizen of the United States, :residing at Fort Branch, in the county of Gibson and State of Indiana, have invented a new and useful Grain- @Breaker and Grinding-Mill, of which the fol-` lowing is a specification, reference being had to the accompanying drawings.

This invention relates to machines for grinding, breaking, or `reducing grain; audits object is to construct a machine in which provis- `ion shall be made for separating or grading the grain into different sizes, and for adjusting the reducing.- surfaces so that at the point AIO surfaces.

where thelarger-sized grains are fed they shall be farther apart than at the point at which the smaller grains are fed to the said reducing- In-machines of the class referred to where no such provision is made, the smaller grains are barely broken, or notv at all, while the larger grains are liable to be crushed too finely, the result being an uneven andunde- `sirable chop, [while by my improved machine a chop may be produced which will be of even qu ality throughout.

Referring to the l drawings hereto annexed, Figure 1 is a side view of my improved ma- 1 chine. Fig. 2 is arear view of the same. Fig.

y E, the surface of whichmay be either smooth or corrugated, according to the kind of work to be done. The sides of the box or frame A are provided on their inner sides with guides or bearings F for a beam, G, adapted to slide in the said bearings to and from the grindingcylinder, as shown. To the front upper edge of said beam is securely attached an upwardly and rearwardly inclined plate. H, serving to hola the adjustable grinding-plate, as will be lso presently described. The rear side of thebeam G has clips I, in which are journaled screws J J, working in a transverse beam, K, at the rear end of the frame. By means of the said screws, which are provided with suitable operating-handles, the ends of the beam and of the grinding-plate support-ed by the same may be independently adj usted with reference t0 the grinding-cylinder.

L designates the grinding-plate, the grinding-face of which may be either smooth or corrugated or otherwise dressed, according to the kind of work to be done. Said plate, which is mounted, as shown, upon the inclined supporting-plate H, is provided on its under side with screws M M, extending through slots N N in the supporting-plate, and provided with clamping-nuts O. The upper edge ofthe grinding-plate is provided with lugs P, in which work the adj Listing-screws Q Q, the lower ends of which are journaled in plates R B at the upper edge of the supporting-plate H. By means of these adjusting-screws the grinding plate may be raised or lowered, so as to bring its lower edge above, below, or on a level with the horizontal center of the grinding-cylinder, as may be desired, with reference to the nature ofthe material to be operated upon.

. The side beams, B B, of the casing are provided with set-screws S S, which may be tightened against the ends of the supporting-beam, for the purpose of retaining the latter securely `in any position to which it may be adjusted.

T designates a hopper arranged above and between the grinding-cylinder and grindingplate, and divided by vertical partitions into several compartments, U U. In the drawings hereto annexed three such compartments, U U U2, have been shown, which discharge, respectively, at the ends and at the middle of the grinding-cylinder. l

V is a screen mounted upon crank-arms W WV on top of the frame or casing, above the hopper T. The position of said screen is slightly inclinedy owing to the greater length of the crank-arms at one end of the same. It will be seen that the perforations or openings in the upper end of the screen, above the compartment U of the hopper, are comparatively small. Those in the middle part ofthe screen, above the compartment U, are somewhat larger, and those at the lower end of the screen, above the compartment U2, are larger still. It follows that the screen will be graded according to the number of compartments in the hopper, the grain being thereby separated into IOO grades of various sizes, each size being discharged into its proper hopper. The screen is operated from a pulley, X, upon the shaft of the grinding-cylinder, which is connected by a belt or band, Y, with a pulley, Z, journaled in a suitable bearing provided at the upper end of the frame. The shaft of the pul' ley Z is provided with a crank-arm, A, which is connected by a pitman, B, with the screen, to which a reciprocating motion may thus be imparted when the machine is operated. The chop, when'reduced by the grinding mechanism, drops upon an inclined plane, C', which conveys it to suitable receptacles. Said incline is provided with partitions D', corresponding with those in the hopper, thus enabling the chop from the several hoppers to be separately inspected, enabling the attendant to set the grinding-plate properly to secure the desired results.

The operation of this invention and its advantages will be readily understood from the foregoing description, taken in connection with the drawings hereto annexed. The grindingplate having been properly set, power is applied, thereby causing the grinding cylinder to revolve, andat the same time imparting a reciprocating motion to 'the screen. Grain is now supplied at the upper end of the latter, is separated, and passes through the several. divisions of the hopper to the grinding or reducing mechanism, where it is reduced to the desired degree of iineness.

This machine is simple in construction, easily adjusted and managed, and efficient in operation for the purposes set forih.

I claim as my invention and desire to secure by Letters Iatent ofthe United Statesl. The vcombination of the frame, the grinding-roller, guide-flanges upon the inner sides of the sides of the frame, a supporting-beam sliding between said flanges, clips upon the rear side of said beam, screws mounted in the rear part of the frame and journaled in said clips, and set-screws mounted in the sides of the frame, and adapted to bear against the ends of the supporting-beam, substantially as set forth.

2. The combination, with the supportingbeam having an upwardly and rearwardly extending slotted plate, of the grinding-plate, having screws on its under side that extend through the said slots, clampingnuts, plates at the upper edge of the supportingplate, lugs at the upper edge of the grinding-plate, and screws mounted in said lugs and journaled in said plates, whereby the grinding-plate may be adjusted, substantially as set forth.

3. rIhe combination of the frame, the grindingroller, the supporting-beam, mechanism for adjusting the ends of the latter independently with reference to the ends of the grinding-roller, an upwardly and rearwardly extending plate secured rigidly to the upper front edge of the supporting-beam, and the grinding-plate secured adjustably upon the Asaid inclined plate, substantially as set forth.

4. Ina machine for reducing grain, the combination of a frame, a grinding-cylinder, a grinding-plate, mechanism for adjusting the ends of the latter independently with reference to the grinding-cylinder, a hopper having several compartments arranged to discharge at various points of the grindingsurface, an inclined screen arranged` above the said hopper, and having openings of a different size abov`e each compartment of the latter, the openings being of gradually-increasing size from the upper toward the lower end of the said screen, and suitable operating mechanism, substantially as and for the purpose set forth.

5. An organized machine for reducing grain, the same comprising mechanism for separating the grain. into grades of various sizes, mechanism for feeding the separate grades to different poiuts of the reducing mechanism, a grinding-cylinder, a grinding-plate, mechanism for adjusting the ends of the latter independently with reference to the vgrinding-cylinder, an inclined delivery-plane, and vertical partitionsupon the latter, whereby separate compartments are formed to receive the chop from variouspoints ofthe reducing mechanism, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

JOHN M. SPEER, JR.

Vitnesses:

ELrsHA L. Pierrcnnr'r, OSCAR Pi. HoLcoMB. 

